Summary

June 6, 2011: The "Google Mars" mapping program has uncovered a possible alien base on Mars. The base is at the martian coordinates 49'19.73"N 29 33'06.53"W. The compound appears to be about 700 feet long, and roughly cylindrical.

Experts were quick to debunk the video, writing the image off to camera anomaly caused by cosmic rays and image compression software.

Which means the video wasn't removed by the person who posted it! It's a conspiracy to keep this quiet.

No one's set foot on Mars just yet, but they will! The cylindrical facility is created by self-assembling nano-robots, sent back in time as pure information, a meme so potent it can co-opt the crystaline matrix of the martian soil. The resulting nanites eventually strip mars of resources and refashion it into a Tipler Cylinder.

They might not even be human, but aliens from a distant society facing the Big Crunch or the Heat Death of the Universe. Mankind is long-since extinct in their experience (or they've never heard of us), and Mars just coincidentally happened to be the nearest place that had the right chemical composition for the assembly meme to function.